Cutter head



Nov. 16,1926. 1,607,036 w. F. BAAR CUTTER HEAD Filed Jan 9, 1925 mi N iouuTIBaar Patented Nov." 16, 1926.

UNITED STTES attest WILLIAM F. BAAR, on GRAND RAPIDS, MIOHIGANQ CUTTER HEAD.

Application filed January This invention relates to improvements in cutter heads for wood working machinery, especially for jointers, shapers and the like and its object is to provide a cutter head made from a single piece of metal whereby the cutting edges are always maintained in proper alignment and the article may be made very cheaply. i The structureof this invention lends. itself particularly well to the manufacture of cutterheads having the blades arranged alternately at different angles relative to the axis of rotation for the purpose of work ing on woods having crossed and knurly grains.

The invention is hereafter more fully described and particularly pointed out in the claim reference being had to the accompanying drawings in which,

Fig. 1 is an end View of a cutter head made in accordance with the invention.

Fig. 2 is a vertical transverse section on the line 22 of Fig. 1.

Fig. 3 is a horizontal transverse section on the line 3-3 of Fig. 1 and Fig. d is a perspective View of the device.

Like numbers refer to like parts in all of the figures. The device comprises the substantially disk-shaped body portion 1 having a central aperture 2 adapting it to fit upon the spindle of the machine in which it is used, the body being clamped by a nut against a shoulder as is ordinary practice with such devices. Formed integrally with the body are the diametrically opposite forwardly turned flanges 3 and also the diametrically opposite rearwardly turned flanges 4c, the flanges 3 being arranged ninety degrees around the body from the flanges 4.

The blades 5 each having a cutting edge 6 are also formed integrally with the body 19, 1925. semu No. 3,338.

portion and with the flanges 3 and .5, the forward edges of the blades merging into the flanges 3 and the rearward edges of the blades merging into the flanges' t.

The cutter shown in the drawing is of the type in which the alternate blades areoppositely inclined relative to the axis of rotation of the cutter" and the structure embodying this invention is particularly well adapted to the format-ion of the blades so arranged.

The whole device is forged from a relatively flat piece of steel which may be easily cut and worked. Although it is possible to form these cutter heads singly by hand forging it is advisable to provide dies for their manufacture and after the proper dies have been made the cutter heads may be 'manufactured'by their use very economically, much more cheaply than the customary built up style of cutter head, and they are just as eflicient in operation and more desirable than the old style because the blades always have their proper alignment and radial adjustment and there is no chance of the blades becoming loose and flying out While in operation.

I claim :1 A cutter head formed from a single piece like body portion having a central aperture and arranged in the plane of rotatioin'blades formed integrally with the body portion extending radially from the body and arranged in angular relation to the body and to the axis of rotation and flanges formed integrally with the body and the blades and extending forwardly and rearwardly respectively from the body and merging into the blades to stiffen them.

.In testimony whereof I aflix my signature.

WILLIAM BAAR.

of relatively thin metal comprising a disk- 

